Home / 487,837.70-731,756.56-321,586.82

Finding the Fourth Proportional to 487,837.70, 731,756.56 and 321,586.82

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Solution

The fourth proportional to 487,837.70, 731,756.56 and 321,586.82 is: 482,380.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,837.70 : 731,756.56 = 321,586.82 : x
  2. Step 2: Convert to fraction form
    487,837.70/731,756.56 = 321,586.82/x
  3. Step 3: Cross multiply
    487,837.70x = 731,756.56 × 321,586.82
  4. Step 4: Simplify right side
    487,837.70x = 235,323,265,144.54
  5. Step 5: Solve for x
    x = 235,323,265,144.54/487,837.70
  6. Step 6: Final answer
    x = 482,380.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.